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Finding the Fourth Proportional to 480,434.76, 662,570.34 and 398,633.40

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Solution

The fourth proportional to 480,434.76, 662,570.34 and 398,633.40 is: 549,757.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,434.76 : 662,570.34 = 398,633.40 : x
  2. Step 2: Convert to fraction form
    480,434.76/662,570.34 = 398,633.40/x
  3. Step 3: Cross multiply
    480,434.76x = 662,570.34 × 398,633.40
  4. Step 4: Simplify right side
    480,434.76x = 264,122,667,373.36
  5. Step 5: Solve for x
    x = 264,122,667,373.36/480,434.76
  6. Step 6: Final answer
    x = 549,757.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.